Tysfjord is especially known for its great concentration of killer whales that enter the fjord every fall. The killer whales follow the spawning herring, which also every year has come to Tysfjord in great shoals between October and January. Nature is overwhelming north of the Polar circle. The days are short, but at night the aurora may really light up the sky. Tysfjord is a municipality with distinctive features. The area is impressive with its wild and beautiful scenery with deep fjords and steep, majestic mountains. The mountains are spectacular and the fjords abounding in fish of various species. Tysfjord is situated where Norway is at its narrowest. From Hellemobotn and to the Swedish border there is only 6 km. The county is a two cultural commune as it is center for the Lule-Sami population in Norway.